# uvc-camera rtsp Source: https://forum.modalai.com/topic/1244/uvc-camera-rtsp Category: Flight Core and Legacy VOXL (https://forum.modalai.com/category/9/flight-core-and-legacy-voxl) Tags: voxl Posted: 2022-08-25 10:42:02 UTC by 張為超 Replies: 7 · Views: 1209 ## 張為超 · 2022-08-25 10:42:02 UTC Hello :blush: , I'm trying to use rtsp to stream a uvc camera. After I finish the connection(using fast boot module) and setting(using voxl-uvc-server and streamer), i get a stream from my computer like following: ![Screenshot 2022-08-25 18:07:55.png](https://forum.modalai.com/assets/uploads/files/1661422868250-screenshot-2022-08-25-18-07-55.png) Here's my voxl-streamer.conf about uvc: ``` "uvc-generic": { "input": { "interface": "mpa", "mpa-camera": "uvc" }, "output": { "stream": { "rotation": 0, "width": 640, "height": 480, "decimator": 2, "bitrate": 1000000 } } } ``` My camera is logitech C930c and Luminous C30 and both have similar image. Any suggestion is welcome, big thanks : ) ## Reply by Eric Katzfey (ModalAI staff) · 2022-08-25 15:22:08 UTC @張為超 This looks like a mismatch in video format. There are some helpful debugging tips here: https://docs.modalai.com/voxl-uvc-server/#helpful-tips. Can you show the output when you run ```voxl-uvc-server -s``` and also ```voxl-uvc-server -d -v```? ## Reply by 張為超 · 2022-08-26 03:40:47 UTC Hello, Thanks for answering me.:blush: here's output for voxl-uvc-server -s : ``` voxl:~$ voxl-uvc-server -s *** START DEVICE LIST *** Found device 1 Got device descriptor for 046d:0891 E1127E0E Found device 046d:0891 DEVICE CONFIGURATION (046d:0891/E1127E0E) --- Status: idle VideoControl: bcdUVC: 0x0100 VideoStreaming(1): bEndpointAddress: 129 Formats: UncompressedFormat(1) bits per pixel: 16 GUID: 5955593200001000800000aa00389b71 (YUY2) default frame: 1 aspect ratio: 0x0 interlace flags: 00 copy protect: 00 FrameDescriptor(1) capabilities: 00 size: 640x480 bit rate: 24576000-147456000 max frame size: 614400 default interval: 1/30 interval[0]: 1/30 interval[1]: 1/24 interval[2]: 1/20 interval[3]: 1/15 interval[4]: 1/10 interval[5]: 1/7 interval[6]: 1/5 FrameDescriptor(2) capabilities: 00 size: 160x120 bit rate: 1536000-9216000 max frame size: 38400 default interval: 1/30 interval[0]: 1/30 interval[1]: 1/24 interval[2]: 1/20 interval[3]: 1/15 interval[4]: 1/10 interval[5]: 1/7 interval[6]: 1/5 FrameDescriptor(3) capabilities: 00 size: 176x144 bit rate: 2027520-12165120 max frame size: 50688 default interval: 1/30 interval[0]: 1/30 interval[1]: 1/24 interval[2]: 1/20 interval[3]: 1/15 interval[4]: 1/10 interval[5]: 1/7 interval[6]: 1/5 FrameDescriptor(4) capabilities: 00 size: 320x180 bit rate: 4608000-27648000 max frame size: 115200 default interval: 1/30 interval[0]: 1/30 interval[1]: 1/24 interval[2]: 1/20 interval[3]: 1/15 interval[4]: 1/10 interval[5]: 1/7 interval[6]: 1/5 FrameDescriptor(5) capabilities: 00 size: 320x240 bit rate: 6144000-36864000 max frame size: 153600 default interval: 1/30 interval[0]: 1/30 interval[1]: 1/24 interval[2]: 1/20 interval[3]: 1/15 interval[4]: 1/10 interval[5]: 1/7 interval[6]: 1/5 FrameDescriptor(6) capabilities: 00 size: 352x288 bit rate: 8110080-48660480 max frame size: 202752 default interval: 1/30 interval[0]: 1/30 interval[1]: 1/24 interval[2]: 1/20 interval[3]: 1/15 interval[4]: 1/10 interval[5]: 1/7 interval[6]: 1/5 FrameDescriptor(7) capabilities: 00 size: 424x240 bit rate: 8140800-48844800 max frame size: 203520 default interval: 1/30 interval[0]: 1/30 interval[1]: 1/24 interval[2]: 1/20 interval[3]: 1/15 interval[4]: 1/10 interval[5]: 1/7 interval[6]: 1/5 FrameDescriptor(8) capabilities: 00 size: 480x270 bit rate: 10368000-62208000 max frame size: 259200 default interval: 1/30 interval[0]: 1/30 interval[1]: 1/24 interval[2]: 1/20 interval[3]: 1/15 interval[4]: 1/10 interval[5]: 1/7 interval[6]: 1/5 FrameDescriptor(9) capabilities: 00 size: 640x360 bit rate: 18432000-110592000 max frame size: 460800 default interval: 1/30 interval[0]: 1/30 interval[1]: 1/24 interval[2]: 1/20 interval[3]: 1/15 interval[4]: 1/10 interval[5]: 1/7 interval[6]: 1/5 FrameDescriptor(10) capabilities: 00 size: 800x448 bit rate: 28672000-172032000 max frame size: 716800 default interval: 1/30 interval[0]: 1/30 interval[1]: 1/24 interval[2]: 1/20 interval[3]: 1/15 interval[4]: 1/10 interval[5]: 1/7 interval[6]: 1/5 FrameDescriptor(11) capabilities: 00 size: 800x600 bit rate: 38400000-184320000 max frame size: 960000 default interval: 1/24 interval[0]: 1/24 interval[1]: 1/20 interval[2]: 1/15 interval[3]: 1/10 interval[4]: 1/7 interval[5]: 1/5 FrameDescriptor(12) capabilities: 00 size: 848x480 bit rate: 32563200-195379200 max frame size: 814080 default interval: 1/30 interval[0]: 1/30 interval[1]: 1/24 interval[2]: 1/20 interval[3]: 1/15 interval[4]: 1/10 interval[5]: 1/7 interval[6]: 1/5 FrameDescriptor(13) capabilities: 00 size: 960x540 bit rate: 41472000-124416000 max frame size: 1036800 default interval: 1/15 interval[0]: 1/15 interval[1]: 1/10 interval[2]: 1/7 interval[3]: 1/5 FrameDescriptor(14) capabilities: 00 size: 1024x576 bit rate: 47185920-141557760 max frame size: 1179648 default interval: 1/15 interval[0]: 1/15 interval[1]: 1/10 interval[2]: 1/7 interval[3]: 1/5 FrameDescriptor(15) capabilities: 00 size: 1280x720 bit rate: 73728000-147456000 max frame size: 1843200 default interval: 1/10 interval[0]: 1/10 interval[1]: 1/7 interval[2]: 1/5 FrameDescriptor(16) capabilities: 00 size: 1600x896 bit rate: 114688000-172032000 max frame size: 2867200 default interval: 1/7 interval[0]: 1/7 interval[1]: 1/5 FrameDescriptor(17) capabilities: 00 size: 1920x1080 bit rate: 165888000-165888000 max frame size: 4147200 default interval: 1/5 interval[0]: 1/5 FrameDescriptor(18) capabilities: 00 size: 2304x1296 bit rate: 238878720-238878720 max frame size: 5971968 default interval: 1/2 interval[0]: 1/2 FrameDescriptor(19) capabilities: 00 size: 2304x1536 bit rate: 283115520-283115520 max frame size: 7077888 default interval: 1/2 interval[0]: 1/2 MJPEGFormat(2) bits per pixel: 0 GUID: 4d4a5047000000000000000000000000 (MJPG) default frame: 1 aspect ratio: 0x0 interlace flags: 00 copy protect: 00 FrameDescriptor(1) capabilities: 00 size: 640x480 bit rate: 24576000-147456000 max frame size: 614400 default interval: 1/30 interval[0]: 1/30 interval[1]: 1/24 interval[2]: 1/20 interval[3]: 1/15 interval[4]: 1/10 interval[5]: 1/7 interval[6]: 1/5 FrameDescriptor(2) capabilities: 00 size: 160x120 bit rate: 1536000-9216000 max frame size: 38400 default interval: 1/30 interval[0]: 1/30 interval[1]: 1/24 interval[2]: 1/20 interval[3]: 1/15 interval[4]: 1/10 interval[5]: 1/7 interval[6]: 1/5 FrameDescriptor(3) capabilities: 00 size: 176x144 bit rate: 2027520-12165120 max frame size: 50688 default interval: 1/30 interval[0]: 1/30 interval[1]: 1/24 interval[2]: 1/20 interval[3]: 1/15 interval[4]: 1/10 interval[5]: 1/7 interval[6]: 1/5 FrameDescriptor(4) capabilities: 00 size: 320x180 bit rate: 4608000-27648000 max frame size: 115200 default interval: 1/30 interval[0]: 1/30 interval[1]: 1/24 interval[2]: 1/20 interval[3]: 1/15 interval[4]: 1/10 interval[5]: 1/7 interval[6]: 1/5 FrameDescriptor(5) capabilities: 00 size: 320x240 bit rate: 6144000-36864000 max frame size: 153600 default interval: 1/30 interval[0]: 1/30 interval[1]: 1/24 interval[2]: 1/20 interval[3]: 1/15 interval[4]: 1/10 interval[5]: 1/7 interval[6]: 1/5 FrameDescriptor(6) capabilities: 00 size: 352x288 bit rate: 8110080-48660480 max frame size: 202752 default interval: 1/30 interval[0]: 1/30 interval[1]: 1/24 interval[2]: 1/20 interval[3]: 1/15 interval[4]: 1/10 interval[5]: 1/7 interval[6]: 1/5 FrameDescriptor(7) capabilities: 00 size: 424x240 bit rate: 8140800-48844800 max frame size: 203520 default interval: 1/30 interval[0]: 1/30 interval[1]: 1/24 interval[2]: 1/20 interval[3]: 1/15 interval[4]: 1/10 interval[5]: 1/7 interval[6]: 1/5 FrameDescriptor(8) capabilities: 00 size: 480x270 bit rate: 10368000-62208000 max frame size: 259200 default interval: 1/30 interval[0]: 1/30 interval[1]: 1/24 interval[2]: 1/20 interval[3]: 1/15 interval[4]: 1/10 interval[5]: 1/7 interval[6]: 1/5 FrameDescriptor(9) capabilities: 00 size: 640x360 bit rate: 18432000-110592000 max frame size: 460800 default interval: 1/30 interval[0]: 1/30 interval[1]: 1/24 interval[2]: 1/20 interval[3]: 1/15 interval[4]: 1/10 interval[5]: 1/7 interval[6]: 1/5 FrameDescriptor(10) capabilities: 00 size: 800x448 bit rate: 28672000-172032000 max frame size: 716800 default interval: 1/30 interval[0]: 1/30 interval[1]: 1/24 interval[2]: 1/20 interval[3]: 1/15 interval[4]: 1/10 interval[5]: 1/7 interval[6]: 1/5 FrameDescriptor(11) capabilities: 00 size: 800x600 bit rate: 38400000-230400000 max frame size: 960000 default interval: 1/30 interval[0]: 1/30 interval[1]: 1/24 interval[2]: 1/20 interval[3]: 1/15 interval[4]: 1/10 interval[5]: 1/7 interval[6]: 1/5 FrameDescriptor(12) capabilities: 00 size: 848x480 bit rate: 32563200-195379200 max frame size: 814080 default interval: 1/30 interval[0]: 1/30 interval[1]: 1/24 interval[2]: 1/20 interval[3]: 1/15 interval[4]: 1/10 interval[5]: 1/7 interval[6]: 1/5 FrameDescriptor(13) capabilities: 00 size: 960x540 bit rate: 41472000-248832000 max frame size: 1036800 default interval: 1/30 interval[0]: 1/30 interval[1]: 1/24 interval[2]: 1/20 interval[3]: 1/15 interval[4]: 1/10 interval[5]: 1/7 interval[6]: 1/5 FrameDescriptor(14) capabilities: 00 size: 1024x576 bit rate: 47185920-283115520 max frame size: 1179648 default interval: 1/30 interval[0]: 1/30 interval[1]: 1/24 interval[2]: 1/20 interval[3]: 1/15 interval[4]: 1/10 interval[5]: 1/7 interval[6]: 1/5 FrameDescriptor(15) capabilities: 00 size: 1280x720 bit rate: 73728000-442368000 max frame size: 1843200 default interval: 1/30 interval[0]: 1/30 interval[1]: 1/24 interval[2]: 1/20 interval[3]: 1/15 interval[4]: 1/10 interval[5]: 1/7 interval[6]: 1/5 FrameDescriptor(16) capabilities: 00 size: 1600x896 bit rate: 114688000-688128000 max frame size: 2867200 default interval: 1/30 interval[0]: 1/30 interval[1]: 1/24 interval[2]: 1/20 interval[3]: 1/15 interval[4]: 1/10 interval[5]: 1/7 interval[6]: 1/5 FrameDescriptor(17) capabilities: 00 size: 1920x1080 bit rate: 165888000-995328000 max frame size: 4147200 default interval: 1/30 interval[0]: 1/30 interval[1]: 1/24 interval[2]: 1/20 interval[3]: 1/15 interval[4]: 1/10 interval[5]: 1/7 interval[6]: 1/5 END DEVICE CONFIGURATION *** END DEVICE LIST *** ``` voxl-uvc-server -d -v : ``` voxl:~$ voxl-uvc-server -d -v 046d Enabling debug messages voxl-uvc-server starting Vendor ID 0x046d chosen Image resolution 640x480, 30 fps chosen UVC initialized Device 046d:0000 found Device opened uvc_get_stream_ctrl_format_size succeeded for format 0 Streaming starting Got frame callback! frame_format = 3, width = 640, height = 480, length = 614400, ptr = (nil) * got image 30 * got image 60 * got image 90 * got image 120 ... .. ``` I use gstream to watch rtsp from laptop by using: ``` gst-launch-1.0 -v playbin uri=rtsp://192.168.8.1:8900/live uridecodebin0::source::latency=0 ``` Maybe here's the problem? But I also check VLC media player and got pretty much same image. ## Reply by Eric Katzfey (ModalAI staff) · 2022-08-26 16:23:28 UTC (in reply to 張為超) @張為超 I don't see anything incorrect. Can you also show output when manually launching voxl-streamer with the -d option? ## Reply by 張為超 · 2022-08-29 02:29:49 UTC (in reply to Eric Katzfey) @Eric-Katzfey hello,sorry for responding late. here's output for voxl-streamer -d : ``` voxl:~$ voxl-streamer -d Enabling debug messages Using configuration file /etc/modalai/voxl-streamer.conf MPA interface chosen Input pipe name /run/mpa/uvc/ Output stream width 640 Output stream height 480 Output stream bitrate 1000000 Output stream rotation 0 Output frame decimator 2 No image overlay specified Camera server Connected Meta data from incoming frame: magic_number 0x564F584C timestamp_ns: 67575140926 frame_id: 720 width: 640 height: 480 size_bytes: 614400 stride: 1280 exposure_ns: 100 gain: 100 format: 8 Input parameters initialized Made rtsp_server Created RTSP server main loop context Created RTSP server main loop Created RTSP server main loop source for callback Got 2 from gst_rtsp_server_attach Stream available at rtsp://127.0.0.1:8900/live A new client has connected to the RTSP server Creating media pipeline for RTSP client Made empty pipeline Made app_source Made parser_queue Made raw_video_parser Made scaler_queue Made scaler Made converter_queue Made video_converter Made rotator_queue Made video_rotate Made video_rotate_filter Made encoder_queue Made omx_encoder Made rtp_filter Made rtp_queue Made rtp_payload Made video_info Made video_caps ``` ## Reply by Eric Katzfey (ModalAI staff) · 2022-08-29 15:22:45 UTC (in reply to 張為超) @張為超 Everything still looks normal. We will order a couple of Logitech C930e and see if we can recreate your issue. ## Reply by 張為超 · 2022-08-30 03:20:12 UTC (in reply to Eric Katzfey) @Eric-Katzfey Hey, I just update my voxl-platform from 3.6.0 to 3.8.0 and reinstall some package include uvc-server. And I find out that the image become nice and clear. So I guess the problem is solved for me. Hope you guys still have time to refund C930e. Really big thanks for helping me to resolve problem. Cheers :smiley: ## Reply by Eric Katzfey (ModalAI staff) · 2022-08-30 14:49:05 UTC (in reply to 張為超) @張為超 Great, glad to hear it is working for you now!